Need advice on buying '94 XJ6

Looking at buying Jag XJ6. 106K mi.
$3000.00 cash
Has been in accident, repairs made, no evidence of damage.
Damage was made to right quarter panel/front bumper,grill.
Burgundy paint,faded on hood and trunk lid.
Leather-Tan interior,some wear and cracking.
A/C compressor needs replacing.
New drive belts. Motor looked clean, not steam cleaned like most used car places.
Looking in oil fill/valve cover, there was some milky looking oil. oil on dip stick wasn't black but it wasn't exactly clear or milky looking.( could that be condensate from a short run/drive?)
Tires have good tread.
Test drive was good. All elect. windows/sunroof/seats operate.
Brakes were tight. no unusual squeaks or rattles.
Radio needs code.
Tranny shifted good.
I think the guy was being honest about the car(seemed more honest than the usual used car person,this came from my wife!)
I offered him $2000.00 cash, he refused. Counter offered He would cover sales tax,about $150.00. And an A/C compressor if one can be found reasonably priced.
I don't mind doing a few minor repairs myself.
Could someone fill me in on the dependability/reliability of these cars?
I have disc problems in my neck and back, the jag seats are the most comfortable for me.

sounds like the jag im going to be selling in june only not as beat up. i have one just like that only the motor needs some TLC and a alignment